listbase: Don't specify the same thing twice

We only need to set EXPLICIT_NOTIFY once.

Pointed out in https://www.viva64.com/en/b/0793/

diff --git a/gtk/gtklistbase.c b/gtk/gtklistbase.c
index 53bf995c779fc1e12176403f385de5d4cc5bf3c7..41e25858f5d053ef3f31ff900f31dfb0872b6bba 100644 (file)
--- a/gtk/gtklistbase.c
+++ b/gtk/gtklistbase.c
@@ -1147,7 +1147,7 @@ gtk_list_base_class_init (GtkListBaseClass *klass)
                        P_("The orientation of the orientable"),
                        GTK_TYPE_ORIENTATION,
                        GTK_ORIENTATION_VERTICAL,
-                       G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_EXPLICIT_NOTIFY);
+                       G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
 
   g_object_class_install_properties (gobject_class, N_PROPS, properties);